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A 10t wagon moving at 4m/s strikes a 20t wagon moving at 2.5m/s in the same direction. After collision, the 10t wagon travels backwards at 3.6m/s. Find the velocity of the 20t wagon immediately after
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The appearance of Cyanobacteria in Earth's early history resulted in an excess of oxygen in the atmosphere which fueled the evolution of complex life. In what other ways did oxygen impact Earth?
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ASAP which changes in an electric motor will make the motor stronger check all that apply using a stronger permanent magnet using a weaker permanent magnet increasing current in the electromagnet decr
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The 2004 Indian Ocean tsunami was caused by a shift in two plates that pushed one section of the sea floor under another section of the sea floor by 5 meters. What type of boundary is this?
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Electrons in a photoelectric-effect experiment emerge from a copper surface with a maximum kinetic energy of 1.10 eV.
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Q4 i attach the full question Consider two long straight current - carrying wires seen end -on in the figure below . The wires are perpendicular to the screen of the computer the cur
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Q4 i attach the full question Consider two long straight current - carrying wires seen end -on in the figure below . The wires are perpendicular to the screen of the computer the curr
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Which of the following best explains the polarity of water (H2O)? A. Electrons are more attracted to the oxygen atom, so there is a partial negative charge on the oxygen atom. B. Since the oxygen atom
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Q5 Two containers ( call them A and B ) with the same initial volume , V=47L, hold the same amount of monatomic ideal gas ,say helium , at the same initial temperature TI =304 K and the same initial
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Q7 During one compression stroke ( process) in an engine , 0.30 moles of air ( a diatomic ideal gas ) are compressed adiabatically from an initial volume and temperature of V1= 5.3 L and T1=277K to fi
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A 24 kg child descends a 5.0 m high slide and reaches the ground with a speed of 2.8 m/s. What is the child's Gravitational Potential Energy? (Assume gravity to be -10 m/s^2)
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A train travels 59 kilometers in 3 hours, and then 74 kilometers in 5 hours. What is its average speed?
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A 222-Newton upward net force is being applied to a 101010-kg object. What is the magnitude of the upward acceleration on the object (in\text{ m}/\text{s}^2 m/s 2 space, m, slash, s, start s
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A stationary rock is pushed off a very high cliff. Which graph correctly represents the acceleration due to gravity as the rock undergoes free fall to the ground? A) https://www.usatestprep.com/modul
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50 points! A 9.0 x 10^3 kg satellite orbits the Earth at the distance of 2.56 x 10^7 m from Earth’s surface. What is its period? Showing work is required! Thanks!
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Use the following table of a school bus during morning pickups to calculate its average speed between 0 h and 2.34 h. Could you please also explain how you got your answer? WILL MARK BRAINLIEST
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Use the following table of a school bus during morning pickups to calculate its average speed between 0 h and 2.34 h. Enter your answer in the space providedWILL MARK BRAINLIEST
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A pumpkin with a mass of 2.5 m/s was pushed toward a wall. The average acceleration of the pumpkin was 10.7 m/s. how much force was applied to the pumpkin to make it move?
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What one is a true statement about endothermic reactions? a)energy from an outside source is continuously being added b)the reaction container always feels hot c)the reactants have less heat energy th
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In an attempt to reduce our dependence on non-renewable resources, and cut down on the harm to the environment, we could burn ______ to produce electricity. (2 points)
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How would you change the distance between two charged particles to increase the electric force between them by a factor of 16? a) reduce the distance by a factor of 4. b) increase the distance by a fa
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Tim adds salt as he starts to heat a pot of water to cook pasta. When the water is boiling, he notices the salt has dissolved explain y
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Where qvis is the energy of activation for viscous flow, a is a temperature-independent constant, and r and t are, respectively, the gas constant and the absolute temperature. a plot of ln η versus 1
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What is the probability that an electron in the 1s state of a hydrogen atom will be found at a distance less than a/4 from the nucleus?
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Treating the ladder as a uniform rod of length 3.66 m and mass 10.6 kg, find the torque the person must exert on the ladder to give it an angular acceleration of 0.243 rad/s2.
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The signal generator has an open-circuit voltage of 3.5 v. when the generator is loaded with 22 ω resistance, its terminal voltage drops to 2.8 v. what is the generator's output impedance
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The 200-mm-radius disk rolls without sliding on the surface shown. knowing that the distance bg is 160 mm and that at the instant shown the disk has an angular velocity of 8.4 rad/s counterclockwise a
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The hoisting gear a has an initial angular velocity of 60 rad>s and a constant deceleration of 1 rad>s2. determine the velocity and deceleration of the block which is being hoisted by the hub on gear
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The development of cyclones and anticyclones about high- and low-pressure regions is a result of deflection of air currents by ____________.
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The active element of a certain laser is made of a glass rod 33.0 cm long and 1.30 cm in diameter. assume the average coefficient of linear expansion of the glass is equal to 9.00 10-6 (°c)-1. the te
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Point charge is moving at a constant 8.0 x 106 m/s in the + y-direction, relative to a reference frame. at the instant when the point charge is at the origin of this reference frame, what is the magne
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In lab, you performed an experiment with a spring to find the mass of an "unknown mass." if the spring constant is 9.50 n/m and the "unknown mass" caused a displacement of \delta 15.6 cm, what is the
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If this pulley is subjected to a constant counterclockwise angular acceleration of αa= 3 rad/s2 , determine the angular velocity of pulley b after b turns 5 revolutions. the hub at d is rigidly conne
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How fast (in m/s and mph) would a 6.80-cm copper bar have to move at right angles to a 0.550-t magnetic field to generate 1.50 v (the same as a aa battery) across its ends?
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Given an electron beam whose electrons have kinetic energy of 10.0 kev , what is the minimum wavelength λmin of light radiated by such beam directed head-on into a lead wall? express your answer nume
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At what depth, in meters, a column of mercury is the pressure 1.00 atm? the density of mercury is 13.6 × 103 kg/m3.
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Continental __________ fill in volcano __________ fill in plains description low land between hills or mountains ____________ deep valley with high steep sides deepest part of the ocean volcano an
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A simply supported wood beam of length l = 6 ft carries a concentrated load p at midspan, as shown. the cross-sectional dimensions of the beam are b = 6 in. and h = 11 in. if the allowable shear stren
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Please help, I am very confused!! A wave has a wavelength of 11 mm and a frequency of 17 hertz. What is its speed?
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A 935 kg drag race car accelerates from rest to 117 km/h in 0.749 s. What change in momentum does the force produce?
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The first law of thermodynamics states that heat added to a system is neither created nor destroyed but is as it changes into other forms of energy. fill in the blank
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If an object loses 21.7x10^19 electrons, what would be the electric charge of this object, measured in Coulombs?
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The excess internal pressure (above the external pressure) tries to open the bubble while the surface tension tries to close it.The excess internal pressure (above the external pressure) tries to open
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Which of the following questions can use science as a method of inquiry? How many of hours of homework should be assigned each night? Should pitbulls be allowed to live in cities? Why does a cork floa
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Suaru generator memiliki kumparan berdiameter 0,1m dengan jumblah lilitan 250 dan berputar 3600 rpm dalam medan magnetik 0,6 T. Tentukan tegangan maksimum yang dihasilkan generator?
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Berapakah kapasitas dari generator van de graff yang akan menyimpan muatan 8Mc ketika diberi potensial 12 MV ?
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A 581-kg satellite is in a circular orbit about earth at a height above earth equal to earth's mean radius. (a) find the satellite's orbital speed.
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During a heat wave, there is an increased demand for electricity to operate air conditioners. The basic design of a nuclear reactor that generates electricity is shown below. What is the best way for
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What is the correct order of energy conversions associated with a power plant that uses nuclear fission reactions? -thermal to nuclear to mechanical to electrical -thermal to mechanical to nuclear to
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A tennis ball with a velocity of 9.45 m/s to the right is thrown perpendicularly at a wall. AFter striking the wall, the ball rebounds in the opposite direction with a velocity of -7.48 m/s to the lef